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Old 03-21-2016, 03:28 PM   #1
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38A tankless water heater

No hot water. When water heater is turn on I get a ignite fault then lockout. New motorhome. Purged gas lines, city water hookup, can hear spark firing, turn on hot water for a demand but no fire. What am I doing wrong.

Doug Lay
Berkshire 38A
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Old 03-21-2016, 03:56 PM   #2
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Might be a silly answer, but is the water manifold system valves turned on?
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Old 03-21-2016, 04:02 PM   #3
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Do you have the Atwood or Girard?


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Old 03-21-2016, 05:01 PM   #4
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Atwood tankless water heater.
I'm a newbie, what is the water manifold system valves?
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Old 03-21-2016, 05:10 PM   #5
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On the drivers side where you hook up water supply. The is a red bank and a blue bank of valves. They supply the faucets inside. I don't think that is the problem.


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Old 03-21-2016, 05:37 PM   #6
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Take the heater door off.... On top left inside there's a little tiny red looking button, press that. If you click a very tiny 'click' then you're all set.


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Old 03-21-2016, 09:58 PM   #7
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What Nathan said it a good one to check. The button is more of a black post with a red dot on the end. Make sure you have good gas flow. Make sure the valve in the WH is on.
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Old 03-23-2016, 01:02 PM   #8
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Turn water heater switch off and back on to reset as the heater will stop after three attempts. When you demand hot water make sure the valve is full open as it doesn't work well with it partially open. Went through this same issue on a new Berkshire in the shower. Also make sure the screen filter on the spouts are clean
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Old 03-25-2016, 11:19 AM   #9
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Hi parduelay! Welcome to the Berk family! We also have a 38A.
Our water heater did the same thing last week while we were boon-docking. It may or may not have had anything to do with it, but.... while spraying hair spray in the half bath the CO2 sensor alarm went off. Then we had no hot water. Rick had to go outside and take the water heater door off and press the reset button in the upper left corner. It worked ok after that. (it might be some kind of built in safety trigger shut down).
Good luck and keep up posted,
Karen
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Old 03-25-2016, 12:06 PM   #10
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The CO2 sensor should turn off the LP and to my knowledge has nothing to do with the reset on the water heater. I would guess that in the time it took to open the water heater door and hit the reset the sensor cleared and LP was restored. Someone feel free to correct me. I'm not aware of any reset on the sensor other than the silence button which I guess would be a reset.
Thinking this through as I type is the reset on the water heater sensitive to LP supply being interrupted? So if the CO sensor turns off the LP do you need to push the reset button on the water heater to restore LP to the heater?
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